Question

True or False

Nanostructured materials with average grain diameters smaller than 100 nm, have excellent resistance to deformation by creep.

Answer 1

Nanostructured materials with average grain diameters smaller than 100 nm have excellent resistance to deformation by creep. the statement is True, the reason that can be cited is that these low creep rates are due to the higher fraction of low energy grain boundaries in addition to the limitation on dislocation activity by the small grain.

also, the thing that has to be kept in mind is that grain boundary structure is an important parameter in Nana crystalline or structured materials. Creep rates fall within the same order of magnitude with an increase in grain size.